While working with Peter from ManyLabs/WireGarden, we wanted to begin to create a system of open source water quality sensors that can be cheaply deployed in schools, remote research, maker projects, basically anywhere there is a need! This project is the result of the knowledge gained from the pH line of interfaces combined with research and […]
These devices allow easy and safe control of applications run with one or two push-buttons by securely starting or powering down a system and also resetting the processor or disabling power in case of a non-responding application (e.g. code in a dead loop). This makes the STM660x devices suitable for a broad spectrum of applications
Using the STM6600, STM6601 smart push-button on/off controller Continue Reading
My 68K breadboard computer is alive! It’s always a thrill when a pile of random chips does something recognizably computer-ish for the first time. Blinking some LEDs in sequence is great; running BASIC is super extra great. I’m excited. This simple breadboard machine is a prototype of the 68000 single board computer I plan to
Among the signals below 550 kHz are maritime mobile, distress, radio beacons, aircraft weather, European Longwave-AM broadcast, and point-to-point communications. The low-frequency converter converts the 10 to 500 kHz LW range to a 1010 to 1550 kHz MW range, by adding 1000 kHz to all received signals. Radio calibration is unnecessary because signals are received
In this world exclusive episode, Shahriar takes a close look at the all new Tektronix Real-Time USB Spectrum Analyzer. The RSA306 has an RF bandwidth from 9kHz to 6.2GHz with a real-time analysis window of 40MHz. While being entirely powered form a single USB 3.0 interface, it provides a 100% Probably of Intercept for any
Tektronix RSA306 USB Real-Time Spectrum Analyzer Review and Experiments Continue Reading
It can be nice to know how much battery power you have. It becomes critically important with LiPo batteries since you can permanently damage them by running the voltage down too low. Typically battery voltage detection requires adding a circuit with extra parts and their associated power requirements. Wouldn’t it be great to be able to do this using
Battery Fuel Gauge with Zero Parts and Zero Pins on AVR Continue Reading
Continuing the series on examining devices to measure AC current, this time we’ll try out the CS5464 from Cirrus Logic. I initially built it up on a breadboard, but I’ll skip writing up this test and instead build up a prototype and run AC line power through it. This is a Three-channel, Single-phase Power/Energy
Using the Cirrus Logic CS5464 for AC Current Measurement Continue Reading
Find out the WunderBar – the OpenSensor Cloud Platform enabling to easily develop applications for the physical world. The WunderBar IoT (Internet of Things) Starter Kit from company relayr mimics the appearance of a chocolate bar with a WiFi enabled master module, plus six detachable smart sensor mini-modules. The WunderBar Internet of Things WiFi &
WunderBar brings things to life and to internet Continue Reading
This is a Solar Tracker. A full size, internet cloud connected, smartphone accessible Solar Tracker built mainly from 2x4s and plywood, employing wooden peg gears, recycled curtain poles, nuts, bolts and threaded rod. The solar tracker uses a home built electronic controller incorporating WiFi, stepper motor drives, accelerometer and magnetometer. The tracker was designed to
The Arduino’s greatest weakness is also it’s greatest triumph. That is, it is only a low power simple processor, which makes internet connectivity for such a simple device difficult. Often the network interface has a few orders of magnitude greater performance than the arduino atmel avr processor itself. Arduino Yun is the answer to wifi
Arduino Wifi With Hi Flying HF-LPT100 / USR WIFI232-T Continue Reading
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